Question

【题目】The earth’s temperature keeps on going up over the years and this is _________ we call global warming.

A. where B. that

C. what D. which

Answer 1

【答案】C

【解析】考查表语从句。句意：地球的温度这几年一直在上升，这种现象我们称之为＂全球变暖＂。根据句意并分析句子结构可知，空处引导一个表语从句，并在从句中作call的宾语。